Optical Density

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2-1-200

The logarithm to base ten of the reciprocal of the transmittance.

Symbol: D D = -log10T

Reference: C.I.E.




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

Languages

English

diameter at the waterline (m)

change in the value of a term

Solar declination angle (in degrees)

Forward amplitude

Contrast

Celsius (previously Centigrade)

Capacitance

charge current

Intensity

Illuminance

Energy

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM

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